856172 has 6 divisors (see below), whose sum is σ = 1498308. Its totient is φ = 428084.

The previous prime is 856169. The next prime is 856181. The reversal of 856172 is 271658.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107018 + ... + 107025.

It is an arithmetic number, because the mean of its divisors is an integer number (249718).

2⁸⁵⁶¹⁷² is an apocalyptic number.

It is an amenable number.

856172 is a deficient number, since it is larger than the sum of its proper divisors (642136).

856172 is a wasteful number, since it uses less digits than its factorization.

856172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214047 (or 214045 counting only the distinct ones).

The product of its digits is 3360, while the sum is 29.

The square root of 856172 is about 925.2956284345. The cubic root of 856172 is about 94.9555470696.

The spelling of 856172 in words is "eight hundred fifty-six thousand, one hundred seventy-two".